发现Wisp1在全身葡萄糖平衡中的功能:从Wisp1淘汰赛小鼠的见解
bioRxiv : the preprint server for biology
|February 6, 2026
概括
WNT1诱导信号通路蛋白1 (Wisp1) 缺乏改善高脂肪饮食的雄性小鼠的胰岛素敏感性,通过减少脂肪组织炎症,而不会影响整体葡萄糖耐受性. Wisp1影响局部炎症,而不是全身血糖控制.
科学领域:
- 代谢调节 代谢调节 代谢调节
- 肥胖问题研究研究
- 炎症生物学 炎症生物学
背景情况:
- WNT1诱导信号通路蛋白1 (Wisp1/CCN4) 是一种与肥胖中代谢功能障碍相关的母细胞蛋白.
- 在全身葡萄糖代谢中Wisp1的具体作用尚不清楚.
研究的目的:
- 研究Wisp1缺乏对代谢调节的影响,特别是葡萄糖代谢和胰岛素敏感性.
- 为了确定Wisp1是否在饮食引起的肥胖和相关炎症中起作用.
主要方法:
- 在生理和高脂肪 (HF) 饮食条件下对Wisp1淘汰赛 (KO) 小鼠的分析.
- 评估全身葡萄糖耐受性,胰岛素敏感性,胰岛素水平和脂肪组织炎症 (巨细胞透,细胞因子表达).
- 对B细胞质量和小岛炎症的评估,以应对HF饮食.
主要成果:
- 在生理或HF饮食条件下,Wisp1缺乏不会影响全身的葡萄糖耐受性.
- 接受HF饮食的雄性Wisp1KO小鼠显示胰岛素敏感性增强,胰岛素水平降低,脂肪组织炎症减少.
- 在KO小鼠的内脏脂肪中观察到减少巨细胞透和促炎细胞因子表达.
- 在KO小鼠中,β细胞质量扩张和小岛炎症在HF饮食中被减弱.
结论:
- 缺少Wisp1可以改善HF饮食中的雄性小鼠的胰岛素敏感性,主要是通过减轻脂肪组织炎症.
- 似乎Wisp1调节脂肪组织中的局部炎症反应,间接影响小岛对代谢压力的适应.
- Wisp1不是全身葡萄糖平衡的直接调节者,但在代谢功能障碍的炎症方面起作用.
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